You can get the "MAX" badge on your work within Tidal by making sure that your audio files meet their specifications.
You can find more information about those specifications here:
Once you've uploaded your release to DistroKid, and your audio files meet the required specifications, Tidal will add that badge to your work on their end.
TL;DR for people who don't like external links:
If your tracks are mixed with a bit depth of 24-bit or higher, Tidal will automatically apply the "MAX" badge.